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Author Topic: 2012 DS power pulsing at sustained speeds  (Read 2071 times)

BSDThw

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Re: 2012 DS power pulsing at sustained speeds
« Reply #15 on: May 28, 2014, 02:02:10 AM »

I got both bikes updated hope I don't get mixed up!

My 2012DS got a new firmware for the MBB. It is connected by the OBDII plug.

The Sevcon got a new firmware (x.dld) and new "settings"  (x.dcf).

The dealer had a PC program/script (eq update.bat) that runs through all stages.

When all was programmed the SinCos setting was monitored - It will display a graph that shows how the setting is and your dealer can adjust the angle.
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Air Drag Sucks - 2012 Zero DS ZF9 - 2013 Zero FX ZF5.7

eyeinsky

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Re: 2012 DS power pulsing at sustained speeds
« Reply #16 on: May 28, 2014, 04:09:12 AM »

Thanks good insight.

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nigezero

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Re: 2012 DS power pulsing at sustained speeds
« Reply #17 on: May 28, 2014, 06:27:22 AM »

I had a very slight pulsing feeling on my 2010 on trailing throttle which turned out to be wear on the throttle potentiometer - might be a red herring just a thought
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eyeinsky

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Re: 2012 DS power pulsing at sustained speeds
« Reply #18 on: June 01, 2014, 01:22:23 AM »

Found the problem. front tire over inflated, dealer filled the tire to 32 PSI dropped it down to 20 PSI no more issues.

Thanks for the help all

Jerry
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Richard230

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Re: 2012 DS power pulsing at sustained speeds
« Reply #19 on: June 01, 2014, 03:11:41 AM »

That is an odd solution.   ???  The factory recommendation for the 2012 "S" is 32 psi for the front tire and that is what I used on my bike (and 35 psi in the rear tire) for as long as I had it. The only real issue that I had with that recommendation is that the ride was harsh over small bumps in the road. I never noticed any pulsing issues, the handling was fine and it looks like the front tire should last about 15K miles (my daughter has the bike now).  My thought is that your pulsing was caused by the front tire being unbalanced.  Perhaps the balancing weight flew off and your dealer noticed the marks on the rim where the weight used to be and replaced it.   :o

In any case, congratulations on solving your problem.  Enjoy your ride.   :)
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Richard's motorcycle collection:  2018 16.6 kWh Zero S, 2009 BMW F650GS, 2020 KTM 390 Duke, 2002 Yamaha FZ1 (FZS1000N) and a 1978 Honda Kick 'N Go Senior.
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